Prime Industrial Topcoat SC7730

Industrial water-based exterior topcoat for wooden surfaces
General Information
Prime Industrial Topcoat is a water-based clear-drying finish suitable for vertical exterior surfaces, such as claddings, fences, patio, pergolas, garage and entrance doors. It is not suitable as a deck finish. It must be applied on Prime Decorative Wood Colorant to achieve maximum UV protection.
General Features
  • Transparent
  • Water repellent
  • Allows wood to breathe
  • UV resistant
  • Thixotropic (can be applied vertically)
  • Does not crack, peel or blister
  • Lead-free
  • Environmentally friendly
  • Ready to use
Where to Use
  • Suitable for all exterior wood except floors
  • Doors and window joinery
  • Shutters
  • Claddings
  • Fences
  • Pergolas
  • Balcony railings
  • Roof fringes
  • 15 L.
Color Chart



The above colors are applied on pine and are intended to approximate the final color. The color obtained will vary according to the type, texture and the absorbency of the wood. To see the final color, it is recommended to apply the coating on the wood to be actually used.



Surface Preparation




  • Before applying the product, wait 4-6 hours for Prime Decorative Colorant applied surface to dry.
  • The product is ready to use and does not require thinning.
  • Stir the product thoroughly before use and check its homogeneity. Repeat this process during the application.
  • Apply the product in 2 coats by a spray gun (2,5-3 mm nozzle, min. 3 atm pressure) or airmix on Prime Decorative Wood Colorant applied surface without sanding (wet on wet) and wait 1,5-2 hours between coats.
  • For any reason, if 3 hours exceeded between coats, wait 24 hours and sand the surface with #220/240 sandpaper before applying the second coat.
  • For the best result, slight sanding between coats is advised.
  • Do not apply the product directly on pre-coated surfaces.
  • Clean the wood surface completely from dirt and oil and perform a slight sanding.
  • Thoroughly clean the generated dust.
  • Repeat same process as described in “Application” with 1 or 2 coats depending on weathering.
  • Inspect annually and maintain as required. 
  • To achieve UV protection, the product, must be applied on Prime Decorative Wood Colorant.
  • The general application temperature of the product is between 15°C to 25°C at a relative humidity range of 40-65%.
  • The moisture content of the wood should be max. 20%.
  • Do not apply the product under direct sunlight or rain.
  • Do not apply linseed oil, basecoat/primer, yacht varnish before or after Prime Industrial Varnish applied surfaces.
  • Wait 72 hours before packaging coated/finished goods.
  • The product should be protected from freezing and stored at temperatures between 5°C to 35°C.
  • Painting tools should be cleaned with soap and plenty of warm water after application. 
General Instructions

For product application, health and safety information, read the product's Technical Data Sheet and Safety Data Sheet (SDS) from the documents section.




  • For long-term protection and a decorative appearance, it is recommended to apply Prime Decorative Wood Colorant before SC7730. Since dark color colorants contain more pigment, they are more resistant to sunlight (UV) and thus increase the service life of the wood.
  • If it is desired to get maximum service life from exterior applications, it is recommended to apply the product to the back parts of the wood. In this way, the moisture that wood can absorb from the facade and construction will be kept to a minimum, and the work of the wood will be minimized.
  • Make sure that the edge corners of the wood you are applying will be chamfered (rounded) and no sharp corners. You cannot provide adequate protection to these sharp corners as you cannot apply enough of the product for film-forming.
  • In particular, before applying on hardwoods such as iroko, chestnuts, the surface should be wiped with cellulosic thinner after sanding and cleaned from rubber and tannin residues. These residues that can be found on the wooden surface prevent the paint from sticking to the surface and cause it to dry late. Sanding should be done after this wiping is completed. If there is still tannin and rubber residue on the surface, wiping should be repeated after sanding.